|
Mention how you will connect the ammeter and the voltmeter
|
|
1
|
2494
|
April 4, 2019
|
|
Derive the expression for the heat produced due to a current T flowing for a time interval
|
|
1
|
3663
|
April 4, 2019
|
|
(a) Define the term ‘Coulomb’
|
|
1
|
7463
|
April 4, 2019
|
|
(a) Define the term Volt’
|
|
1
|
12935
|
April 4, 2019
|
|
Two resistors with resistances 5Ω and 15Ω are to be connected to a battery of emf 9V so as to obtain: (i) minimum current
|
|
1
|
3802
|
April 4, 2019
|
|
(a) Distinguish between the terms “overloading and short circuiting” as used in domestic circuits
|
|
1
|
1561
|
April 4, 2019
|
|
Two lamps, one related 60w at 220w at 220V and the other 40w at 220V
|
|
1
|
598
|
April 4, 2019
|
|
(a) State Ohm’s Law
|
|
1
|
4249
|
April 4, 2019
|
|
(i) Draw X schematic diagram of a circuit consisting of a battery of five 2V cells
|
|
1
|
1187
|
April 4, 2019
|
|
If a 12V'battery is connected to the arrangement of resistances given below; calculate: (i) the total effective resistance of the arrangement
|
|
1
|
13624
|
April 4, 2019
|
|
A torch bulb is rated 2.5V and 750mA. Calculate (i) its power
|
|
1
|
4576
|
April 4, 2019
|
|
Two coils A and B of insulated wires are kept close to each other
|
|
1
|
2435
|
April 4, 2019
|
|
Calculate the resistance of an electric bulb which allows a 10A current when connected to a 220V power source
|
|
1
|
8234
|
April 4, 2019
|
|
What is an electric circuit? Distinguish between an open and a closed circuit
|
|
1
|
9277
|
April 4, 2019
|
|
Calculate the electric energy consumed by a 1200W toaster in 20 minutes
|
|
1
|
10936
|
April 4, 2019
|
|
A piece of wire of resistance 20Ω is drawn out so that, its length is increased to twice its original length
|
|
1
|
1778
|
April 4, 2019
|
|
A wire is 1.0m long 0.2mm in diameter and has a resistance of 10Ω. Calculate the resistivity of its material
|
|
1
|
55058
|
April 4, 2019
|
|
Calculate the area of cross section of a wire, if its length is 1.0m, its resistance is 23Ω
|
|
1
|
16996
|
April 4, 2019
|
|
An electric heater is used on 220V supply and takes a current of 3.4A. Calculate (i) its power
|
|
1
|
1293
|
April 4, 2019
|
|
An electric lamp is marked 100W, 220V. It is used for 5 hours daily. Calculate. (i) its resistance while glowing
|
|
1
|
28827
|
April 4, 2019
|
|
An electric iron has a rating of 750W, 220V. Calculate. (i) Current passing through it
|
|
1
|
35914
|
April 4, 2019
|
|
Draw a schematic diagram of an electric circuit consisting of a battery of two cells each of 1.5V, 5Ω, 10Ω and 15Ω
|
|
1
|
8420
|
April 4, 2019
|
|
Out of 60w and 40w lamps, which one has a higher electrical resistance when in use?
|
|
1
|
3281
|
April 4, 2019
|
|
Why is the series arrangement not used for connecting domestic electric appliances in a circuit?
|
|
1
|
1171
|
April 4, 2019
|
|
A wire of resistance 10 ohm is bent in the form of a closed circle
|
|
1
|
4671
|
April 4, 2019
|
|
Figure shows two electrical circuits
|
|
0
|
3358
|
March 17, 2018
|
|
Find out the following in the electric circuit given in figure alongside: Effective resistance of two 8Ω resistors in the combination Current flowing through 4Ω. resistor
|
|
0
|
3640
|
March 17, 2018
|
|
Name an instrument that measures electric current in a circuit
|
|
0
|
4048
|
March 17, 2018
|
|
The potential difference between two points in an electric circuit is 1 volt
|
|
0
|
885
|
March 17, 2018
|
|
Resistivity of copper is lower than that of aluminium which, in turn, is lower than that of constantan. Six wires labelled as A, B, C, D, E, F have been designed as per the following parameters:
|
|
0
|
14842
|
March 17, 2018
|